Re: [PATCH] Hugepages should be accounted as unevictable pages.

From: Rik van Riel
Date: Tue Jun 23 2009 - 17:56:30 EST

Alok Kataria wrote:
On Tue, 2009-06-23 at 14:24 -0700, Rik van Riel wrote:

I can see something reasonable on both sides of this
particular debate. However, even with this patch the
"unevictable" statistic does not reclaim the total
number of pages that are unevictable pages from a
zone, so I am not sure how it helps you achieve your

Yes but most of the other memory (page table and others) which is
unevictable is actually static in nature. IOW, the amount of this other
kind of kernel unevictable pages can be actually interpolated from the
amount of physical memory on the system.

That would be a fair argument, if it were true.

Things like page tables and dentry/inode caches vary
according to the use case and are allocated as needed.
They are in no way "static in nature".

All rights reversed.
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